﻿#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
int main()
{
	int a, b, c;
	scanf("%d%d%d",&a,&b,&c);
	if (a + b > c && a + c > b && b + c > a) 
	{
		if (a == b && b == c)
		{
			printf("ȱ\n");
		}
		else if (a == b || a == c || b == c)
		{
			printf("\n");
		}
		else
		{
			printf("ͨ\n");
		}
	}
	else
		printf("\n");
	return 0;

}
int main()
{
	int a, b;
	scanf("%d%d", &a, &b);
	int k=0;
	while (k=a % b)
	{
		a = b;
		b = k;
	}
	printf("%d", b);
	return 0;
}
int main()
{
	int a, b;
	int k;
	scanf("%d%d", &a, &b);
	int mul = a * b;
	while (k = a % b)
	{
		a = b;
		b = k;
	}
	printf("%d", mul / b);
	return 0;
}